WillItInbox

I built WillItInbox because email deliverability is usually split across separate tools for message testing, recipient validation, authentication checks, domain health, and DMARC reporting.

The idea is simple: before a SaaS team sends password resets, billing emails, onboarding emails, newsletters, or campaigns, they should be able to test the actual email and see what could break.

WillItInbox currently helps with:

• Real-message deliverability reports

• Email validation for single addresses and CSV lists

• SPF, DKIM, DMARC, DNS, header, content, and link checks

• Sender domain monitoring

• DMARC/source visibility

• API keys and webhooks for automated checks

It is not an ESP, warmup tool, or guarantee of inbox placement. The goal is to make technical email risk visible before important emails are sent.

I’m looking for feedback from SaaS founders, developers, and email-heavy teams:

Would you use something like this before launching transactional emails or campaigns?

What part feels most useful: deliverability testing, email validation, DMARC/domain monitoring, or API automation?